Gay marriage? For more and more Americans, that's just fine. (Bill Pugliano/Getty Images)

October 21, 2013

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New Jersey just became the 14th state to legalize gay marriage. This is a development that would have seemed impossible just a few years ago.

Consider this: A Washington Post/ABC News poll earlier this year showed that 58 percent of Americans approve legalizing gay marriage and only 36 percent oppose it. In 2003, it was the reverse: 37 percent favored same-sex marriage and 55 percent opposed it. How did we get here? Let's take a trip down memory lane...

October 15, 1971Jack Baker and his partner James Michael McConnell are the first gay couple in the country to apply and sue for the right to get married. The Minnesota Supreme Court rules that marriage is "a union of man and woman, uniquely involving the procreation and rearing of children within a family." The U.S. Supreme Court refuses to hear the case.

1977Gallup doesn't ask whether people approve of gay marriage — it asks, "Do you think homosexual relations between consenting adults should or should not be legal?" A full 43 percent of those polled say no.

April 25, 2000The Vermont House of Representatives passes a bill to allow gay and lesbian couples to form civil unions.

2003An ABC News/Washington Post poll shows that support for gay marriage is up to 37 percent.

November 18, 2003In a 4-3 decision, the Massachusetts Supreme Judicial Court rules that the state cannot "deny the protections, benefits, and obligations conferred by civil marriage to two individuals of the same sex who wish to marry."

February 12, 2004Mayor Gavin Newsom demands that the San Francisco city clerk issue marriage licenses to same-sex couples. In August, the California Supreme Court rules that he exceeded his authority and voids 3,955 marriages.

February 24, 2004President George W. Bush backs a constitutional amendment that would ban gay marriage. "Marriage cannot be severed from its cultural, religious, and natural roots without weakening the good influence of society," the president says.

February 28, 2004Jason West, mayor of New Paltz, N.Y., follows Gavin Newsom's lead by solemnizing gay marriages outside of city hall. The state Supreme Court later issues a restraining order barring him and other village trustees from conducting same-sex marriages.

May 17, 2004Marcia Kadish and Tanya McCloskey, after being together for 18 years, become the first gay couple to get legally married in the United States, at Cambridge City Hall in Massachusetts.

July 31, 2008Gov. Deval Patrick clears the way for same-sex couples from other states to get married in Massachusetts by repealing a 95-year-old statute that "barred out-of-state residents from marrying here if the marriage would be considered void in their home state." The legislation was originally meant to prevent interracial marriage.

October 8, 2008Connecticut legalizes gay marriage thanks to a 4-3 state Supreme Court ruling that says that an existing law banning same-sex marriage "failed to establish adequate reason to justify the statutory ban."

November 4, 2008Proposition 8, which defines marriage as between a man and a woman, is passed by 52.1 percent of voters in California. Estimates put the amount spent on campaigns for and against the proposition at $72 million.

April 3, 2009The Iowa Supreme Court rules that a 10-year-old ban on same-sex marriage "treated gay and lesbian couples unequally under the law," making the state the first in the Midwest to allow gay marriage.

December 22, 2010After repealing the "don't ask, don't tell" law preventing openly gay men and women from serving in the military, President Obama tells ABC News' Jake Tapper that his "feelings are constantly evolving" on gay marriage.

June 24, 2011A bill legalizing gay marriage squeezes through the Republican-led New York State Senate by a vote of 33-29. Gov. Andrew Cuomo signs the bill into law, doubling the number of Americans who live in states that allow same-sex marriage.

October 1, 2011The Pentagon allows military chaplains to perform same-sex marriages as long as they aren't at official Defense Department events and don't violate local laws.

February 17, 2012Gov. Chris Christie vetoes a gay marriage bill in New Jersey and asks the legislature to "trust the people of New Jersey and seek their input by allowing our citizens to vote on a question that represents a profoundly significant societal change."

May 8, 2012North Carolina passes an amendment that says "marriage between one man and one woman is the only domestic legal union that shall be valid or recognized in this state."

May 9, 2012President Obama becomes the first president to say that "same sex couples should be able to get married," although he disappoints gay rights activists by saying the issue should still be decided by the states.

November 6, 2012For the first time ever, gay marriage is legalized by popular vote. The American Civil Liberties Union calls the passing of measures in Maryland, Maine, and Washington state a "watershed moment" for gay rights in America. In Minnesota, a constitutional amendment that would have defined marriage as between a man and a woman fails to pass.

March 8, 2013Bill Clinton writes an op-ed in The Washington Post saying that he regrets signing DOMA into law and now finds it "incompatible with our Constitution."

March 15, 2013Sen. Rob Portman (R-Ohio) breaks with many in his party by declaring his support for gay marriage, saying that he changed his mind because his 21-year-old son is gay.

March 18, 2013Hillary Clinton fuels rumors that she will run for president in 2016 by releasing a six-minute video announcing her support for gay marriage — a stance that is increasingly in the mainstream of American politics.

May 2, 2013Rhode Island Gov. Lincoln Chafee signs a bill legalizing same-sex marriage in Rhode Island, the 10th state to do so.

May 7, 2013"Delaware should be, is and will be a welcoming place to live and love and to raise a family for all who call our great state home," says Democratic Gov. Jack Markell as he signs a bill making Delaware the 11th state in the country to legalize same-sex marriage.

May 14, 2013Minnesota becomes the 12th state to legalize gay marriage.

June 26, 2013The Supreme Court rules 5-4 that DOMA is unconstitutional, allowing same-sex couples to collect tax, health, and retirement benefits from the federal government. It also dismisses a Proposition 8 appeal, clearing the way for gay marriage to resume in California.

October 21, 2013Same-sex marriage officially becomes legal in New Jersey, and gay couples begin exchanging vows in several Garden State communities. The office of Republican Gov. Chris Christie also drops its appeal of the court decision recognizing gay marriage.

This article was originally published on March 20, 2013, and last updated on October 21, 2013.